The connection of the brake shoe disc brake with lever transmission
(57) Abstract:The invention relates to the braking devices of railway vehicles and relates to disk brakes. The connection of the brake Shoe disc brake with lever mechanism includes a rocker with two longitudinal pins and the transverse element of the hinge and plate with lugs for pivotally fastening the rocker. What's new is that in the eyes of their plate pins installed the balancer, one of the pivots on which the end face provided with a friction device, representing loaded by means of spring a couple of washers, one of which is connected to the lug plate and the other mounted on the tongue of the balance weight can be rotated with the latter with respect to the first washer, with hinged transverse element of the balancer is connected to the lever mechanism, the thorn which has more friction device representing loaded by a spring relative to the balancer washer. The technical result is to simplify the design and increase its reliability. 1 C.p. f-crystals, 9 Il. The invention relates to the braking devices of railway vehicles and touches the disk is initiated, The motor cycle", Moscow, 1960, page 123), which was used in the construction of trucks rail vehicles produced at the Kalinin carriage works, consisting of fixed on the axis of the wheelset brake disc mounted on the beam brake cylinder with dual levers and brake shoes with lining, primalsense to the brake disc on both sides.Design of disc brakes on these trucks do not allow the brake pads to compensate for the movement of the disc that occurs when turning the wheel pairs along the path, and when the lateral motion of the bogie frame. In Fig. 1 is a diagram of the pressure of the brake linings when the coincidence of the axes of the disk 1 and the lining 2. In Fig. 2 is a diagram of the pressing plates when turning the wheel pair or lateral motion of the bogie frame. In Fig.2 shows that the disk 1 takes a moment M = P r (where, P is power; r is the radius), which leads to overloading of parts of the brake and drive, uneven wear of the friction surfaces of the brake linings 2.The same shortcoming have disc brakes, described in the following literature:
1. C. I. Krylov, Century, Century Wings. Automatic brakes rolling stock, ed. M.: Transport, 1983, page 218;
2. Century, INOS the th rolling stock, M., 1979, page 311.The closest technical solution adopted for the prototype) in relation to the claimed design is the design of the brake linkage for disk brakes of rail vehicles (patent GDR N 134440, 61 H 5/00, publ. 28.02.79), is designed so that a mounting plate holder brake friction pads 1 are the stiffening elements 2, which are expanding in the center of the fixing roller 4, which connects the mounting plate 1 with the brake lever mechanism 6 by means of the balancer 5.Special design shape hanging holder brake friction lining helps to balance the downward position, which occurs when turning the wheel pair in the cart or in the frame of the car.However, this design has five joints. This is clearly shown in the diagram (Fig. 3), where it is seen that lever transmission 6 through its hinges connected with the walking beam 5, which by means of its Central hinge is connected with the platen 4, and the latter, in turn, is connected by two hinges with mounting plate 1. The presence of five joints reduces the reliability of the design.In addition, in this design there are no cell battery (included) which will touch the brake disk.The objective of the proposed technical solution is to simplify the design and increase its reliability.For this proposed connection of the brake Shoe disc brake with lever mechanism includes a rocker with two longitudinal pins and the transverse element of the hinge plate with lugs for pivotally fastening the rocker. What's new is that in the eyes of their plate pins installed the balancer, one of the pivots on which the end face provided with a friction device, representing loaded by means of spring a couple of washers, one of which is connected to the lug plate and the other mounted on the tongue of the balance weight can be rotated with the latter with respect to the first washer, with hinged transverse element of the balancer is connected to the lever mechanism, the thorn which has more friction device representing loaded by a spring relative to the balancer washer.Washer is installed between the load arm and the lug plate and provided with a groove for accommodating studs, connecting it with the lug plate, and between the washer and the plate there is a gap.The technical result is the following.animago cross member directly to the rigging, reduces the number of joints in the structure (see Fig.9) and, thus, increase its reliability.The presence of friction devices on the axle of the rocker and the thorn linkage allows locking plate respectively in vertical and horizontal planes.The one of the friction devices in the form of loaded by the springs of the pair of washers, one of which is connected to the lug plate and the other mounted on the tongue of the balance weight can be rotated with the latter with respect to the first washer allows you to create a normalized value of the friction force between the plate and balancer and with the misalignment of the axes of the disk and plate enables the latter to turn on the thorns of a stabilizer.The execution of the other friction device in the form of washers, loaded by a spring installed between the rocker and lever mechanism allows you to create the normalized magnitude of the friction force between the rocker lever and the transmission.The ability to rotate the plate on the spikes of the balancer, and the hinge element of the balancer lever on the transmission, allows her to snuggle up to the brake disk, the entire surface friction.The normalized value is to guard uniform gap between the surface of the friction disc and plate, to avoid touching the boot disk when the brake is released.In Fig. 4 shows a top view of the connection node of the brake Shoe disc brake with lever mechanism of Fig. 5 - the same, left side view, and Fig. 6 - section a-a in Fig.4; Fig. 7 - section b-B in Fig.4; Fig. 8 is a view along arrow "B" in Fig.7; Fig. 9 - kinematic scheme.The connection of the brake Shoe disc brake with lever mechanism includes a Shoe, a plate 1 with brake pads, rocker 2 pins 3,4, mounted in the lugs 5 of the plate 1, the lever transmission 6 is connected to the collector head 2 through its transverse hinge element 7, and the friction device 8,9 securing the Shoe in the deviant position and allowing him to snuggle up to the friction surface of the disc during braking, when the angle of rotation of the wheelset relative to the bogie frame. The friction device 8, the locking Shoe in a vertical plane, placed at the end of the 10 pin 3 of the walking beam 2 and consists of a washer 11 and a groove 12 that is installed between the rocker 2 and the ring 5 plate 1 and connected with the latter by means of studs 13, between the washer 11 and the plate 1 there is a gap. The washer 11 is able to rotate together with the relics of the disc springs 16 and nuts 17. The spring 16 serves to provide a constant effort of pressing a couple of washers 11 and 15. The washer 15 is attached to the tongue 14 of the collector head 2 without the possibility of rotation relative to it, but with the rocker 2 it can rotate relative to the washer 11.The friction device 9, the locking Shoe in a horizontal plane placed on the tongue 18 linkage 6 and consists of a washer 19 having the ability to move along the axis of the linkage 6, but unable to rotate around this axis. Using Belleville springs 20 and nut 21 and washer 19 is pressed against the rocker 2, creating friction.Design works as follows.With the misalignment of the axes of the linkage and drive (Fig.2) and the touch pads of the disk, the resulting moment M = P r rotates the shoes in the hinges, overcoming the normalized friction between the washer 19 and the collector head 2 (Fig.6), and between the washers 11 and 15. It provides full pressure of the friction surface of the Shoe to the friction surface of the disc.During retraction of boots from disk friction device 8,9 hold the Shoe in position specified when you boot to the disk. 1. The connection of the brake Shoe disc brake with lever transmission is Mirnogo fixing the balancer, characterized in that the lugs of the plates of its pins installed the balancer, one of the pivots on which the end face provided with a friction device, representing loaded by means of spring a couple of washers, one of which is connected to the lug plate and the other mounted on the tongue of the balance weight can be rotated with the latter with respect to the first washer, with hinged transverse element of the balancer is connected to the lever mechanism, the thorn which has more friction device representing loaded by a spring relative to the balancer washer.2. Connection on p. 1, characterized in that the washer is installed between the load arm and the lug plate and provided with a groove for accommodating studs, connecting it with the lug plate, and between the washer and the plate there is a gap.
FIELD: railway transport; freight cars.
SUBSTANCE: invention relates to mechanical part of freight car brakes. Proposed brake beam of freight car bogie is installed on side frames of bogie by means of suspensions of brake shoe holders. Shoes are secured on end of brake beam. Brake beam includes channel beam, cross stay, spacer, end pieces, inserts and clamps. Channel beam of brake beam and shoes of brake holders are interconnected by screw joints. Screw joint consists of rod and stops rigidly secured on channel beam of brake beam and shoe of brake holder. One end part of rod is provided with thread getting into inner thread of support rigidly secured on brake beam and provided with shank. Second end part of rod is cylindrical with reset place adjoining the stop secured on shoe and is fixed from axial displacement by means of washer with pin.
EFFECT: possibility of quick re-adjustment of mechanical part of bogie brakes, when change of track width gauge is required, without demounting of mechanical part of bogie brakes.
4 cl, 4 dwg
SUBSTANCE: in compliance with first version, freight car bogie comprises two side members and bogie bolster. The latter has opposite ends. Note that each end enters appropriate hole of said side member and is held suspended by spring set. Every side member has axle box opening on its every end to receive bearing adapter assembly. Proposed bogie comprises also two braking rail assemblies supported by said bolster and side members. Every assembly of braking rail comprises elongated main section, support section and deflecting section running between main an support sections. Two suspensions of braking rail with arm and base sections support braking rail assembly ends. Braking rail suspensions can be turned upside down so that support sections of braking head can be displaced laterally to allow adaption to various track patterns. In compliance with second version, one of said arm sections intersects base section, preferable at straight angle, while another arm section intersects base section at acute angle. Note that braking rail suspensions are turned relative to mounting holes on the end of every arm section. Note also that, in the latter case, track pattern between base sections of braking head varies. In compliance with third version, braking head support section is attached to one of the end sections of elongated main section of braking head, while braking rail suspensions can be turned so that two support sections of braking head are shifted laterally and spaced apart. Bogie bearing is arranged on bolster top surface. Note here that bogie bearing comprises disk-like insert made from malleable iron.
EFFECT: car bogie unification, adaptation to various track patterns.
14 cl, 22 dwg
SUBSTANCE: invention relates to railroad transport, particularly to rolling stock brakes. Braking assembly comprises two braking bars arranged on each end of braking assembly, braking heads, brake shoes, lever transmissions and braking system drive assembly. First load transfer element is jointed to opposed first ends of each lever transmission, while second load transfer element is jointed to second end of one of lever transmissions. Second load transfer element runs toward opposite second end of one of the opposite lever transmissions. Brake drive assembly comprises flexible elastomer element tightly and directly jointed to mount used to secure brake drive assy to braking system rigid structure and to pusher coupled with lever transmission. Brake drive assy is coupled with pressurised fluid source to allow inflating aforesaid flexible elastomer element to initiate braking.
EFFECT: improved control over brake shoe force, visual indication of work stroke.
20 cl, 5 dwg
SUBSTANCE: invention relates to railway vehicles. brake beam wearproof plate assembly for guide member of brake beam contains brake beam wearproof plate and brake beam guide member. The plate has grooved body with top wall and bottom wall connected by side wall and is made capable of tight entering the guide member of brake beam. Top wall of the plate has the first bead going sideways from the top wall. Bottom wall of the plate has the second bead going sideways from the bottom wall. The first bead of brake beam plate top wall contains locating tab going sideways from this bead and brake beam guide member with upper part and lower part. In the upper part of brake beam guide member, cut is made in which cut matched locating tab of brake beam plate can enter. In the first version, locating tab going from the first bead of brake beam plate top wall has semicircular form and its thickness is approximately equal to thickness of top wall first bead. In the second version, cut in the upper part of brake beam guide member has semicircular form. Locking unit of brake beam wearproof plate for guide member of brake beam contains brake beam wearproof plate and brake beam guide member. In the upper part of brake beam guide member, locking element going from it is made with which element the locking tab of brake beam plate can interact to prevent improper plate location in brake beam guide member. Locking tab going from the first bead of brake beam plate top wall has rectangular form and its thickness is approximately equal to thickness of top wall first bead.
EFFECT: possibility to move brake beam without friction with side frame steel.
6 cl, 5 dwg
SUBSTANCE: invention relates to railway vehicles. Bogie brake comprises brake beam, brake cylinder, brake shoes wear compensators, levers and holders of brake shoes and has suspended links for its placement under car truck. Bogie brake comprises only one separate braking beam and brake shoes wear compensators are aligned with wheels (15) of car bogie.
EFFECT: decreased weight, simplified design and improved characteristics of braking device in brake systems of bogies are provided.
8 cl, 4 dwg
FIELD: railway transport.
SUBSTANCE: proposed disk brake drive fastening unit contains caliper mechanisms coupled with bogie frame supports, brake cylinder rod and housing of which are provided with vertical axles of hinge joints displaced in plane of caliper mechanisms, inner and outer levers of caliper mechanism hinge-coupled with supports of frame tie-rods hinge-connected by ends through vertical axles with inner levers for compressing the levers. Tie-rods relative to axle of brake cylinder are made in form of longitudinal movably interlocked rigid inner and outer systems with guides and jaws of supports of frames, cheeks centered by means of parts of shells connected in pairs and connected into systems by vertical axles of rod hinge joints, housing and inner levers.
EFFECT: improved efficiency of braking owing to provision of compact fastening of drive of disk brake.
4 cl, 12 dwg
SUBSTANCE: rail vehicle consists of body and carriages in journal-boxes of which wheel pairs axle necks (14) are located, and air brake system. On axle butt ends disks (12) are rigidly fixed which have magnetic nicks (13) interacting with mating nicks (6) located on other disks (5) fixed in journal-box (1) covers (2) and capable to move axially. Space between above mentioned disks is connected with control reservoir of air brake system.
EFFECT: elimination of rail vehicle self-moving possibility.
2 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: invention is related to the field of railway transport, namely to disc brake mechanisms used in railway rolling stock. Brake block consists of frame and friction element that is monolithically connected to it. There are mounting lugs installed on back side of frame. Friction element consists of 1-4 inserts. Inserts are arranged as integral or composite. Integral inserts are installed in frame chambers and are arranged in the form of truncated pyramids with base in the form of trapezoid or polygon that are inverted with their lower base to working surface of brake block, with inclination of side walls of α=10°-15°, with provision of "dovetail" joint to frame chambers. Composite inserts are made of parts, parts are installed in cells of frame chambers and are arranged in the form of truncated pyramids or cones inverted with their smaller base to working surface of brake block with inclination of side walls of α=10°-15°, with provision of "dovetail" joint to cells of frame chambers. Frame material additionally covers internal side walls of integral inserts or internal side walls of composite insert parts. There are windows provided in external side walls of frame, at least on two sides opposite to every insert, and inserts have protrusions that correspond to windows. There are heat resistant elastic damper bushings placed in mounting lugs.
EFFECT: increased heat resistance of block, operational durability, reliability and mechanical strength.
9 cl, 8 dwg
SUBSTANCE: invention relates to railway transport, particularly to disk-type brakes. Proposed disk brake consists of casing, friction linings, shoes and braking disk. Said casing is arranged on spring frame of vehicle with jaw-type parallelogram mechanism. Braking disk is fitted on vehicle wheel pair axle. Brake cylinder suspension is arranged on brake casing to translate and rotate thereon and consists of four elements. Journal, rod and spring are coupled with casing and brake cylinder by hinge pins. Moving support represents a frame made up of two-plates, two posts, two axles and four springs and can move along disk brake guide holes. Hinge pins pass through support holes, said pins coupling said support with jaw-type parallelogram mechanism and making points of bearing of the levers. Jay-type parallelogram is formed by moving support, short levers of jaw parallelogram, rockers and tie rods, and is secures at its apices by higher pins. U-like plate spring is secured to every rocker with the help of screw, spring flexible ends thrusting against appropriate shoe.
EFFECT: higher reliability, longer life, efficient braking, simplified lining replacement.
SUBSTANCE: invention relates to railway transport, particularly, to rolling stock braking equipment. Brake comprises brake shoe holder swinging about axis and at least one brake shoe. Said shoe has wearing section interacting with friction pair. Brake shoe geometry allows wear centre, in the case of skew wear, to displace so that torque counteracting said skew wear originates. Multiple polygonal brake shoes may swing about their holders in all directions. Cross section of wearing section narrows toward pair of friction in whatever plate perpendicular thereto.
EFFECT: reduced skew wear, longer life.
5 cl, 10 dwg
SUBSTANCE: braking clamp comprises two braking levers arranged opposite friction surfaces applied to appropriate lateral surfaces of vehicle wheels. Braking lever applies braking force to vehicle wheel by pressing braking clamp against friction surface. Pressure chamber confined by membrane is arranged in braking lever. Pistons displace braking clamp subject to membrane expansion in feeding compressed air into pressure chamber. Guide device guides pistons in direction perpendicular to friction surface.
EFFECT: uniform pressure on revolving wheel surface.
12 cl, 11 dwg
SUBSTANCE: brake clamp comprises first braking lever arranged opposite vehicle wheel first friction surface and second braking lever arranged opposite second friction surface. Moving brake shoe is mounted on first braking lever to apply brake force to first friction surface. Brake clamp houses pistons to move moving brake shoe in response to membrane extension and guide frame to guide pistons in direction perpendicular to first friction surface. Moving brake shoe applies uniform brake force to vehicle wheel together with brake shoe secured to second braking lever.
EFFECT: uniform pressure on revolving wheel surface.
13 cl, 12 dwg
SUBSTANCE: invention relates to machine building and may be used in disc brakes. Proposed device comprises bearing structure running gear, braking unit, load pickup and control unit. Brake unit is arranged on bearing structure and allow transmitting braking force to friction surface of running gear rotating element. Load pickup is arranged on brake unit or on bearing structure and serves to measure friction force between brake unit and friction surface or resultant force. Control unit compares actual values of load from load pickup with preset values. Besides, control unit actuates brake unit to reduce its icing in case actual value deviates from preset value preferable for preset limit value. Proposed transport facility comprises bearing structure running gear, braking unit, load pickup and control unit. Proposed method consists in defining load in brake unit or is bearing structure of transport facility, particularly, railway vehicle, or between brake unit and bearing structure resulted from friction force transmitted from aforesaid friction surface to brake unit. Then, actual value is compared with preset one. Besides, control unit actuates brake unit to reduce its icing in case actual value deviates from preset value preferable for preset limit value.
EFFECT: better control over braking.
17 cl, 2 dwg
SUBSTANCE: proposed device comprises body, brake support, brake support levers, system of bearings and axial bearing. Levers are arranged on body outer surfaces directed in opposite directions to support eccentric shaft. Every lever may be driven by eccentric shaft crank. System of bearings is arranged between body and brake support lever. Eccentric shaft crank arranged at shaft end to extend from said body to rotate therein. Revolving eccentric shaft makes crack moving eccentrically relative to body to drive brake support lever. Axial bearing transfers axial forces from brake support lever to body. Axial bearing is located in zone of crank, between brake support lever and body, or part secured thereon. Axial force flow is directed from brake support lever directly to axial bearing and, therefrom, to body, or part secured thereon.
EFFECT: decreased friction.
6 cl, 3 dwg